There are 3 versions of Demo versions on MS-DOS: 24-bit, 8-bit and combined (24-bit+8-bit). This Demo version is 24-bit on MS-DOS.
The launch will take place in the lowest resolution. You can change the resolution by pressing F11. In general, there are few differences from the full version. Well, except maybe the presence of only one city (Liberty City) and the presence of a timer at the top of the screen when you play. It ticks, and it ticks hard. When you start a level, the countdown starts and the timer ends, after 6 minutes the game process ends. But don't worry, 6 minutes doesn't always run out, you can also restart the game, when you restart the game, 6 minutes will be counted down again.
You can start the game in DOSbox. Do not try to run on the "DOSbox + Windows3.11" assembly, it will not work.